# ABSTRACT: provide the important mathematical constant tau = 6.2831...
# PODNAME: Math::Tau
package Math::Tau;
use strict;
use warnings;
use utf8;
require Exporter;
our @ISA = qw(Exporter);
our @EXPORT = qw(tau τ);
use constant tau => 6.28318530717958647692;
use constant τ => tau;
1;
__END__
=pod
=encoding UTF-8
=head1 NAME
Math::Tau - provide the important mathematical constant tau = 6.2831...
=head1 VERSION
version 1.003
=head1 SYNOPSIS
use Math::Tau;
print tau/2;
# 3.14159265358979
use utf8;
print τ/2;
# 3.14159265358979
=head1 DESCRIPTION
tau is one of the most fundamental and misunderstood mathematical constants.
See L for why pi is a historical mistake.
=head1 CONSTANTS
=over
=item tau
The mathematical constant 6.2831... as floating point.
=item τ
The Greek letter, for those of you who like to use Unicode identifiers.
=back
=head1 SEE ALSO
L, L
=over 4
=item *
L
=back
=head1 AUTHOR
Franklin Chen
=head1 COPYRIGHT AND LICENSE
This software is copyright (c) 2013 by Franklin Chen .
This is free software; you can redistribute it and/or modify it under
the same terms as the Perl 5 programming language system itself.
=cut